Tunk Lake — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Tunk Lake, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Tunk Lake today is 18.2°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
⚠️ As of today, the minimum water temperature ranges from 65°F (18°C) to 68°F (20°C). This is already quite warm water, which is ideal for most people. Swimming becomes comfortable, and prolonged stays in the water do not cause discomfort. This temperature is perfect for family trips and for those who prefer warmer water. It is also comfortable for water sports such as surfing or swimming. It is important to note that these swimming tips and recommendations apply only in good weather. When the air temperature is below 68°F (20°C), and sometimes even below 77°F (25°C), swimming can be unpleasant even with relatively high water temperatures.
Water Temperature Chart Over the Last 30 Days
Table of Daily Sea Temperature Data
| Date | Current | Average | Forecast |
|---|---|---|---|
| SEP 14 | 18.6°C | 21.1°C | |
| SEP 15 | 18.6°C | 21.1°C | |
| SEP 16 | 18.9°C | 21.1°C | |
| SEP 17 | 18.8°C | 21.1°C | |
| SEP 18 | 18.4°C | 21.1°C | |
| SEP 19 | 18.0°C | 21.1°C | |
| SEP 20 | 18.0°C | 21.1°C | |
| SEP 21 | 18.2°C | 21.1°C | |
| SEP 22 | 21.1°C | 18.3°C | |
| SEP 23 | 21.1°C | 18.5°C | |
| SEP 24 | 21.1°C | 18.6°C | |
| SEP 25 | 21.1°C | 18.8°C | |
| SEP 26 | 21.1°C | 18.9°C | |
| SEP 27 | 21.1°C | 19.1°C | |
| SEP 28 | 21.1°C | 19.2°C |
* Current - Actual water temperature value
** Average - Average water temperature on this day in recent years
*** Forecast - Our water temperature forecast
Actual nearshore water temperatures may fluctuate by several degrees from the reported values, especially following heavy rainfall or extended periods of strong winds. Certain wind patterns can cause colder, deeper waters to rise and replace the sun-warmed surface water, leading to noticeable variations.
Our forecast is based on a proprietary mathematical model that considers real-time water temperature changes, historical trends, key weather patterns, wind strength and direction, and air temperature specific to each region. Additionally, we incorporate data from other resorts to enhance accuracy.
Monthly Water Temperature Range (Min, Max & Average)
| Month | Min | Avg | Max |
|---|---|---|---|
| January | 0°C | 1°C | 4°C |
| February | 0°C | 1°C | 4°C |
| March | 0°C | 2°C | 4°C |
| April | 0°C | 3°C | 7°C |
| May | 4°C | 9°C | 14°C |
| June | 10°C | 15°C | 19°C |
| July | 17°C | 22°C | 28°C |
| August | 22°C | 24°C | 27°C |
| September | 19°C | 21°C | 24°C |
| October | 10°C | 14°C | 18°C |
| November | 3°C | 8°C | 12°C |
| December | 0°C | 3°C | 6°C |
Tunk Lake: Water Temperature by Location
Tunk Lake: Weather Forecast
September 22
September 23
September 24
September 25
Location & Local Information
Tunk Lake’s water follows the typical seasonal pattern of temperate Maine lakes. Surface temperatures in summer commonly reach about 65–75°F (18–24°C), with the warmest readings in July and August; deeper water remains notably cooler. In spring the lake warms from near-ice conditions to roughly 40–55°F (4–13°C) depending on sunlight and runoff, while fall brings cooling back into the 50–60°F (10–16°C) range before ice forms. Winter temperatures hover at or just above freezing, about 32–34°F (0–1°C) under ice. Thermal stratification in summer can leave the hypolimnion considerably colder, so subsurface temperatures remain low even on warm days.
Swimming at Tunk Lake is generally permitted as a recreational activity where public access and informal beaches exist, because the lake is used for boating, fishing, and day use. That said, local rules, posted signs and any health advisories should be followed; water quality issues such as algal blooms or bacterial advisories can temporarily restrict swimming. Swimmers should also respect seasonal hazards: cold-water shock and hypothermia risks early and late in the season, and unsafe ice conditions in winter. Lifeguards are not always present, so standard precautions—swimming with a companion, wearing a life jacket for boat entry, and checking current conditions—are advisable.